2. Is there a birthday cake?
Yes, there is. There is a birthday cake.
3. Is there one bottle of cola?
No, there isn't. There are two bottles of cola.
4. Are there five glasses?
No, there aren't. There are seven glasses.
5. Are there five lollipops?
Yes, there are. There are five lollipops.
6. Is there one present?
No, there isn't. There are four presents.